The $IUPAC$ name of neopentane is

Write the $IUPAC$ names of the following compounds:
$a.$ $CH_3-CH=C(CH_3)_2$
$b.$ $CH_2=CH-C \equiv C-CH_3$
$c.$ $CH_2=CH-CH=CH_2$
$d.$ $C_6H_5-CH_2-CH_2-CH=CH_2$
$e.$ $2-\text{Methylphenol}$
$f.$ $CH_3-(CH_2)_4-CH(CH_2-CH(CH_3)_2)-(CH_2)_3-CH_3$
$g.$ $CH_3-CH=CH-CH_2-CH=CH-CH(C_2H_5)-CH_2-CH=CH_2$

What is the $IUPAC$ name of the following structure?
$CH_3CH_2-NH-CHO$

The $IUPAC$ name of the compound $CH_2(OH)-CH(OH)-CH_2(OH)$ is:

The $IUPAC$ name of the given compound is:

The $IUPAC$ name of the following compound is